dispcust.c

一个两碟控制的VCD的代码,两碟之间的转动及连续播放,已大量生产的CODE.

/* Copyright 1997, ESS Technology, Inc.                                 */
/* SCCSID @(#)dispcust.c	1.18 9/15/98 */

/*
 * $Log$
 */

#include "common.h"
#include "dsc.h"
#include "display.h"
#include "dsa.h"
#include "mvd.h"
#include "vcxi.h"
#include "constvar.h"
#include "ioport.h"
#include "const.h"

#ifdef  PIXCLK
#define VCX_PIXCLK      0x8000          /* 32xx is driving pixel clock  */
#else
#define VCX_PIXCLK      0               /* 32xx is reciving pixel clock */
#endif /* PIXCLK */
 
#ifdef  YUV8
#ifdef VMASTER
#ifdef	INV_CLK_R
#define VCX_YUV8        0x12b00         /* Toshiba (clk 1x; inv clk & r)*/
#else
#define VCX_YUV8        0x10c00         /* 8b YUV (3210 as master)      */
#endif	/* else of INV_CLK_R */
#else
#define VCX_YUV8        0x10400         /* 8b YUV (3210 as slave)       */
#endif	/* else of VMASTER */
#else
#define VCX_YUV8        0               /* 16b YUV                      */
#endif /* YUV8 */

/****************************************************************************
 Customed display initialisation.
 ****************************************************************************/
void cust_disp_init(void)
{

#ifdef IIC
    InitIIC();
#endif

#ifdef DSC
    DSC_init();
#endif

#ifndef CUST4
    DISP_set_filter(filter_sharp, filter_sharp);
#else
    cust4_filter = filter_normal; /* initialize cust4_filter */
    DISP_set_filter(cust4_filter, cust4_filter);
#endif /* CUST4 */

#ifdef PLAY20
#ifdef BROWSER1
    vcx_scn_height = 240;	/* For Browser */
#else
#ifndef CUST4
    /* detect the TV mode */
    PREPARE_DETECTION;
    DISP_set_TV_mode((DETECT_NTSC) ? TV_NTSC : TV_PAL);
#endif
#endif
#else
#if (P1O || P2O || P3O || P4O)
    /* For play-only machine, default TV mode is PAL */
    vcx_scn_height = 288;	/* Default is PAL */
#else
    vcx_scn_height = 240;
#endif
#endif

#ifdef DVD_VCD
    vcx_scn_height = 240; 	/* for DVD/VCD  */
#endif

#ifdef VMASTER
    DISP_field_detect = 2;
#else
#ifdef FLIP_TOP
    DISP_field_detect = 1;
#else
    DISP_field_detect = 0;
#endif
#endif

    vcx_scn_outputcntl = VCX_PIXCLK | VCX_YUV8;
#ifdef VMASTER
    vcx_scn_counter_ctl = 0x17;  /* MasterModeSyncs */
#else
    vcx_scn_counter_ctl = 0x16;  /* Non MasterModeSyncs */
#endif
}

/****************************************************************************
 Customed screen parameter initialisation.
 ****************************************************************************/
void cust_change_scn_parameters(int height)
{
    if (height == 240) {		/* NTSC */

	vcx_scn_display_rate	= 60;
	vcx_scn_height		= 240;

	/* horizontal timing */
#ifdef OFF1
	vcx_scn_hstart		= 128;		/* e.g. Ricoh/Bt851	*/
#else
	vcx_scn_hstart		= 127;		/* e.g. Bt856		*/
#endif
	vcx_scn_hsyncperiod	= 858;
#ifdef CUST4
        vcx_scn_vsyncpixel = 858;
#endif

	/* vertical timing */
	vcx_scn_vbendval	= 16;
#ifndef VSTART20
	vcx_scn_vstart		= 16;
#else
	vcx_scn_vstart		= 20;          /* move down a little bit. *
						* for Chrontel.		  */
#endif
	vcx_scn_vbstartval	= 260;
	vcx_scn_vsyncperiod	= 262;

	SET_ENCODER_NTSC;

    } else {					/* PAL */

	vcx_scn_display_rate	= 50;
	vcx_scn_height		= 288;

	/* horizontal timing */
#ifdef OFF1
	vcx_scn_hstart		= 136;		/* e.g. Ricoh/Bt851	*/
#else
	vcx_scn_hstart		= 135;		/* e.g. Bt856		*/
#endif
	vcx_scn_hsyncperiod	= 864;
#ifdef CUST4
        vcx_scn_vsyncpixel = 864;
#endif
	/* vertical timing */
	vcx_scn_vbendval	= 3;
	vcx_scn_vstart		= 18;
	vcx_scn_vbstartval	= 312;
	vcx_scn_vsyncperiod	= 312;

	SET_ENCODER_PAL;
    }

#ifndef VMASTER
    DISP_field_swap = DISP_field_detect ^ (height == 288);
#endif
}